EP 1900997 A4 20100602 - LIQUID CRYSTAL PANEL ILLUMINATING APPARATUS
Title (en)
LIQUID CRYSTAL PANEL ILLUMINATING APPARATUS
Title (de)
VORRICHTUNG ZUR BELEUCHTUNG EINER FLÜSSIGKRISTALLTAFEL
Title (fr)
APPAREIL D' ÉCLAIRAGE À PANNEAU À CRISTAUX LIQUIDES
Publication
Application
Priority
- JP 2006313432 W 20060705
- JP 2005199293 A 20050707
- JP 2006177062 A 20060627
Abstract (en)
[origin: EP1900997A1] Light which tries to enter a diffuser plate 3 at an angle which exceeds an angle at which a percentage of reflected light increases rapidly (that is, the incidence angle ¸ = 70 degrees) is all reflected by a reflecting surface 21 and then enters the diffuser plate 3. Therefore, a pseudo light source is formed by light which was collected near a connection point between adjacent reflecting surfaces 21 out of the emitted light of the discharge lamps 1. So, the brightness between the adjacent discharge lamps 1 is increased, and it is possible to reduce unevenness in brightness. Furthermore, since the discharge lamp 1 is housed inside the reflecting surface 21 whose cross-sectional shape is a parabola, it is possible to reduce the distance between a reflecting plate 2 and the diffuser plate 3, as compared with the prior art, and to reduce the thickness dimension in the anteroposterior direction.
IPC 8 full level
F21S 2/00 (2006.01); F21V 7/00 (2006.01); G02F 1/13357 (2006.01); F21Y 103/00 (2006.01)
CPC (source: EP KR US)
G02F 1/133604 (2013.01 - EP KR US); G02F 1/133605 (2013.01 - EP KR US); G02F 1/133611 (2013.01 - KR); G02F 1/133611 (2013.01 - EP US)
Citation (search report)
- [I] JP 2003031003 A 20030131 - SONY CORP
- See references of WO 2007007621A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1900997 A1 20080319; EP 1900997 A4 20100602; CN 100594321 C 20100317; CN 101218464 A 20080709; JP 2007042613 A 20070215; KR 100969903 B1 20100713; KR 20080033328 A 20080416; TW 200707026 A 20070216; TW I340859 B 20110421; US 2009168404 A1 20090702; US 7954969 B2 20110607; WO 2007007621 A1 20070118
DOCDB simple family (application)
EP 06780808 A 20060705; CN 200680024709 A 20060705; JP 2006177062 A 20060627; JP 2006313432 W 20060705; KR 20087002659 A 20060705; TW 95124985 A 20060707; US 99472406 A 20060705